Luke b



(No Model.)

L" B. BYRNE.

METHOD 0P MAKING PARTS OF BUTTONS.

No. 373,516. Patented Nov. 22, 1887.

Z n esp e fizqrzfor UNITED STATES PATENT OFFICE.

LUKE B. BYRNE, OF PROVIDENCE, RHODE ISLAND.

METHOD OF MAKING PARTS OF BUTTONS.

SPECIFICATION forming part of Letters Patent No. 373.515, dated November 22, 1887.

Application tiled May 26, 1887. Serial No. 239,380. (No model.) d

To all whom it may concern.-

Be it known that I, LUKE B. BYRNE, of Providence, in the county of Providence and State of Rhode Island,haveinvented a certain new and uselul Improvement in the Method of Making Parts of Buttons or Studs and other Articles of Jewelry, of which the following is a specification.

The object of my improvementis to produce a frame for the head or front of a. button or stud, or for an analogous part of another article of jewelry, which shall be covered with a plate of gold or analogous metal not only at the outer or exposed surface, but also around the rear edge.

The improvement consists in producing a wire covered with gold, in winding or coiling the wire around a mandreLin cutting the wire lengthwise of the mandrel and transversely of the several coils, in takingthe rings so formed and joining their ends, in placing the rings so formed in a die, and in striking up the rings by means of alormer or punch whilein the die to impart to them the desired ornamental eonfiguration. I

In the accompanying drawings, Figure 1 represents a piece of plated wire. The end of the wire exhibits theplating of precious metal,

although somewhat exaggerated in thickness.

Fig. 2 is a side view ofa mandrel having such a wire coiled upon it. The dotted line,having arrow-heads at the ends,indicates the line upon which the coils of wire are cut to form rings. Fig. 3 is a view of one of the rings. Fig. 4 is a. vertical section of a die and punch,whereby rings, after having their ends soldered together, are struck up into ornamental shape.

Similar letters of reference designate corre sponding parts in all the-figures.

A designates a wire having a. plating surrounding it. It may be made by any approved process.

3 designates a mandrel, around which the wire A is coiled.

G designates a ring,produced by cutting the coils of wire in the direction of the length of themandrel and soldering the ends of the severed pieces together.

D designates a die into which a ring of the kind described is laid. It will be seen that this die consists of a block of metal with a cavity, d, in the upper end, and a shouldered recess, (1, adjacent to such cavity. This recess forms the matrix of the die. The rings to be treated in the die are laid one at a time in the matrix d.

E designates a former or punch. It has a projection, e, which is adapted to enter the cavity d of the die D. It is provided around this projection with a fillet, e, and above this fillet is provided with a shoulder, e.

The matrix-recess d of the die is shown as concave or rounded inavertical direction. The fillet e ofthepunch is, however, angular. The fillet is, therefore, adapted to force the ring to be formed into the matrix-recess of the die,so as to cause it to derive fromthelatter a shape corresponding to its shape. The shoulder 6 serves to flatten out a portion of the ring. The portion of the punch above the shoulder being of approximately the same size as the die, the shape of the finished ring may be understood from an inspection of Fig. 4, which'shows it between the die and punch.

By means of this process I am enabled to produce from a plated wireaframe which shall be covered with plate not only at the front, but also at the rear of its outer edge portion. Should there be any surplus material forced into the cavity d of the die D, it may be trimmed off. A stone or other ornamental part may be inserted into a frame thus made.

What I claim as my invention, and desire to secure by Letters Patent, is

The process of making a frame for a. button, stud, or other article ofjewelry, eonsistingin producing a plated wire, in coiling such wire upon a mandrel, in cutting the wire trans versely so as to sever itinto a number of pieces, in uniting the ends of these pieces to form rings, and in swaging these rings by means of a die and former or punch, substantially as specified.

LUKE B. BYRNE.

Witnesses:

W. EDWARD FISKE, E. F. HEDLY. 

